Improvement in tbeadle foe sewing machines and other purposes



t @atten-gisten atmt @frn i NOEL n. DEV-0L, 0F MARSHALL, ILLINOIS. i iLetters Patent'Na. 65,887, dated .zme 18, 1867.

IMPROVEMENT IN 'IltEADLE FOB. SEWING MACHINES AND OTHER PURPOSES.

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TO ALL WHOM I'I MAY CONCERN:

Be it known that I, NOEL BVDEVOL, of Marshall, in l the county of Clark,and State of Illinois, have invented' a new and useful Improvement inSewing lliachines;` and I do hereby declare that thefol-lowing is afull, clear, and exact description thereof, which will enable thoseskilledv in the art to make and use the same, reference being had totheaccompanying drawings, forming part of this specification, in which- I,y

Figure 1 is n. front view of the table or stand of a sewing machine,with my improvement applied to the same.

FigureZ, a transverse vertical section taken in the plane of the line ca?, iig. 1.

Figure 3, a detail view, to be hereinafter referred tof i Similarletters of referenceindicate correspondingparts.

The object' of the present inventionnis to prevent the machine from`being started or vrun in the wrong direction, or backward' at any time,and at the same time place the machine under the perfect control of theoperator, and enable him or her, as the casevmay he, to properly startit with the utmost facility, without necessitating the use of the hands,as is new the case with machines not having my improvement applied tothem.

A, in the drawings, representsthc ordinary table or stand of a sewingmachine, and B its operating or dri-virigshaft,.havinga crank, C,which-through tu connecting or Pitman-rod, D, is connected with eneendof the treadle, E, suspended and swinging upon a centroorfulcrum-shaft, F,'ot` the standards G, as is usual in i sewingmachines. H, a ratchet-whecl secured t'o crank-shaft B, and turning incommon with it. I, an arm v Vhung upon crank-shaft B to onisidc ofitsl'ratchet-whecl'I-I, on which arm is hung a spring-pawl, I2, inproper position to engage with the teeth ofthe ratchet-wheel H, when thearm I, to which it is hung as described, is pulled or swung downward, bybearing with the foot upon the supplcmentarytreadle J, connected withthesad arm `through a pitman or .connecting-rod, K, this supplementarytreadle J being hung and swinging upon the same fulcrum-shaft F with theordinary treadle E. l i When it is desired to start the'sewing machinethe supplementary treadlc J is dbpressed by the foot, which, 'actingthrough its Pitman-rod K, and the arm I, with its spring-pawl I, and theratchet-wheel H of the drivingshaft, revolves the latter, the revolutionof whigh caribe continued by bearing -or -pressing down the ordinarytreadle E of the machine, as is obvious without any further explanation;the arrangement of the ratchet-whcel and its pawl,.&c., as abovedescribedppreventiug, as is apparent, the turning of the crank-shaft Binthe wrong direction or backward, and also serving to facilitate thestarting of the machine without requiring the use of thehands-advantages of the mostimportance. To limit the upward play orswing of the arm carrying the spring- -wheel of the crank-shaft B, Ihave extended the pitman-rod of such arm, and connecting it with thesupplementary treadle, to a suicient height toward the table of themachine as to come to a bearing or stop against the under side of thelsame, as plainly shown in the drawings, figs. 1 and 2, a spring, M,serving to throw back the treadle J after each depression of the-same.

I claim as new, and desire to secure by Letters Patent- Theratchet-wheel H, secured to the crank-shaft B of a sewing machine, arml, having spring-pawl I2,

pawl for the ratchet pitman-rod K, supplementary treadle J, and springM, or its equivalent, when all combined and arranged together so as tooperate substantially as and for the purpose described.

` NOEL B.. DEVOL.

Witnesses:

BURNS ARCHER, Jns. McCann,

